Furnace



(No Model.) s Sheets-Sheet 1. W. STUBBLE'BINE.

FURNACE.

No. 487,103. Patented Nov. 29, 1892.

(No ModeL) s Sheets-Sheet 2.

W. STUBBLEBINE;

:FURNAGE;

No. 487,103. "Patented-Nov. 29, 1892.

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Inn!!! QS (No Model.) 3 Sheets-Sheet 3.

W. STUBBLEBINE.

FURNACE.

N0. 487,103. 7 I Patented NOV. 29, 1892.

fiZIZESfiQ-S: r Ewen for? UNITED STATES PATENT OFFICE.

WILLIAM STUBBLEBINE, OF BETHLEHEM, ASSIGNOR TO THE STUBBLEBINE FURNACECOMPANY, OF PHILADELPHIA, PENNSYLVANIA.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 487,103, dated November29, 1892, Application filed December 19, 1891- Serial No. 415,628. (Nomodel.)

To all whom it may concern:

Be it known that 1, WILLIAM STUBBLEBINE, acitizen of the United States,residing at Beth lehem, in the county of Northampton and State ofPennsylvania, have invented certain new and useful Improvements inFurnaces; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the to art to which it appertains to make and use the same.

My present invention relates to improvements in furnaces constructedwith especial reference for consuming hydrocarbon fuel in liquid orgaseous form, such as oil, oil-gas, coal-gas, natural gas, or otherdesirable fluids, such improved furnace being capable of use in thepuddling of iron, smelting of different kinds of ores, for heatingpurposes generally,

or as a glass-furnace, or an open-hearth furnace, or for any purpose forwhich furnaces are used.

In a prior patent issued to me on the 28th day of July, 1891, No.456,663, I have shown and described a reverberatory furnace withheating-chambers on opposite sides of the uptake and communicating byintermediate passages With the puddling-chamber, combined withmixing-fines which extend longitudinally 30 of the furnace, one end ofeach mixing-flue connected to its heating-chamberandth eother end ofsaid mixing-flue having a discharge port which discharges commingled airand gases above the bridge-wall, and blast-pipes located in saidheating-chambers and discharging into the mixing-fines. In the presentinvention I employ the heating-chambers, mixing-fines, and blast-pipesin somewhat similar form as in my prior patent, and combine with saidparts certain elements or devices which adapt the furnace for burningeither liquid or gaseous fuel, the object in view being to consume fuelof the character specified in an economic and advantageous manner and tocommingle the gases and heat arising from the combustionof said fuelwith the current of commingled air and gases from the mixing-fines, saidcurrents from the 1nixing-flues and the liquid or gaseous fuel meetingover the bridge-wall, being commingled at this point and entering theWorking or pnddling chamber in their combined form.

With the foregoing ends in view the invention consists in thecombination, with the mixing-fines and a bridge-wall, of a perforatedarch forming a chamber above the bridgewall and which chamber receivesthe commingled air and gas from the mixing-fines, checker-work in frontof said bridge-wall and below the perforated arch, a blast-pipe belowthe Working-chamber arranged to discharge into the checker-work, and afuel-supply pipe having a series of individual outlets or branches whichdischarge into the checkerwork.

The invention further consists in the combination,construction,andarrangementofparts, which will be fully pointed out and described, andparticularly specified in the claims hereinafter.

In the accompanying drawings, Figure I is a vertical longitudinalsectional view through my furnace on the plane indicated by the dottedline xxof Fig. 2. Fig. 2 isa horizontal sectional view on theplaneindicated by the dotted line 1 y of Fig. 1, and Fig. 3 is avertical transverse section through the furnace on the plane indicatedby the dotted line Z Z of Fig.

2. Fig. 4 is a vertical transverse section on the line 171 m of Fig. 2.Figs. 5 and 6 are detail views in plan and transverse section,respectively, of the metallic diaphragm or dripplate in the checker-workdesigned to catch the drippings of oil orliquid from the branches of thefuel-supply pipe. Fig. 71s a vertical transverse sectional view on theplane indicated by the dotted line X X of Fig. 2.

Like letters of reference indicate corresponding parts in all thefigures of the drawings. o

A indicates the working chamber of the furnace; a, the door in one sideof the same; b, the chills in the bed of the working chamber;

B, the uptake; B, the neck leading from the rear end of the workingchamber to the uptake; and O, the bridge-wall at the front end of theworking chamber.

D E are the heating-chambers formed or built in the masonry of thefurnace, and. said chambers are located at the rear end of the too theheating-chambers D E, and the front ends of said mixing fines or pipesdischarge into a chamber at the front end of the furnace, which will bepresently referred to.

In each of the heating-chambers D E is a blast-box H, preferably locatedat or near the bottom of said heating-chamber, and each blast-box isdivided into two compartments h h by an intermediate vertical partitionh". The two compartments h h of each blast-box H are connected by anelbow-shaped circulat ing-pipe I, arranged in a vertical position in theheatingchamber and having one end openinginto one compartment h and theother end opening into the other compartment 71 of said blast-box. Theblast-pipe J enters the heating-chamber and discharges into thecompartment h of the blast-box H, and from this compartment 71 thecurrent of air or steam passes through the vertical air-pipe I to theother compartment 77/ of said blast-box, and from this lattercompartment the air or steam is conducted byjet-pipes it to the mixingfines or pipes. As the heating-chambers DE are in direct communicationwith the working chamberA by means of the passages de, a portion of theheat and gases from the working chamber passes into saidheating-chambers and circulates around the blast-box and thecirculating-pipe I, whereby the blast of steam or air passing throughthe blast box, the circulating-pipe, and the jet-pipes iiis heatedbefore the air or steam is discharged into the mixing-fines. Thejet-pipes 71 i terminate in the mixing pipes or fines at points a shortdistance in advance of the connection between the mixing-flues andheating-chambers, and as the rapidly-moving currents of air or steamfrom the jet-pipes are injected under pressure into the mixing-fines apart of the gases in the heating-chambers will be drawn into the mixingfines or pipes and thus insure the commingling of said heat and gasesfrom the working and heating chambers with the air or steam blast whilesaid currents are conveyed through the mixing flues or pipes to thefront of the furnace.

In the front of the furnace is the combustion-chamber K between thebridge-wall and the front wall of the furnace, and in this chamber isthe checker-Work L, built of brick in the usual form.

Above the checker-work L in the top of the furnace and in front of thebridge-wall is an overhanging arch M, which is so arranged andconstructed that it forms between the roof and front of the furnace achamber N, which chamber extends transversely across the furnace in theupper front part thereof, so that the four mixing fines or pipes F F G Gwill open and discharge into said chamber the currents of commingled airor steam and gases. The rear wall of this chamberNis inclined or curved,as at m, so that it faces the heat passage or way over the bridge-wall,and this inclined or curved wall of said chamber N is perforated at n topermit the currents of commingled air or steam and gases to pass fromsaid chamber into the working chamber A.

O is the fuel-supply pipe, arranged horizontally on the front wall ofthe furnace, said supplypipe being supported either a short distancefrom the face of the front wall, as shown, or embedded in said frontwall, as most desired. This pipe 0 is supplied with either liquid orgaseous fuel from anyconvenient source; but I prefer to first raise thetemperature of said liquid or gaseous fuel by passing said fuel throughheating-coils PP, located in the heating-chambersD E, said heating-coils connected by pipes 19 p to the supply-pipe O. From thissupply-pipe extends a series of branch or outlet pipes 0, which leadthrough the front wall of the furnace, so as to discharge the fuel intothe checker-work L, and said branches or outlets 0 are provided withregulating cocks or valves 0. The said branches or outlets are of lessdiameter than the supplypipe to cause the liquid or gaseous fuel toenter the checker-work slowly and regularly and thus insure the propercombustion of the fuel. The branch or outlet pipes from the supplypipeare all arranged in substantially the .same horizontal plane, and belowthis plane of said branches or outlets is a horizontal diaphragm ordrip-plate Q, which is arrangedin the checker-work L and is designed tocatch the drippings of oil or liquid fuel from the branches of thesupply-pipe, whereby the liquid is prevented from dripping through thechecker-work into the ash-pit. This diaphragm or drip-plate is providedwith a multiplicity of nipples g, each having a transverse passage q forthe heat and blast, and these nipples extend above the level of thediaphragm or drip-plate and are so spaced or arranged that the liquidfuel will be retained on the diaphragm or plate. As the nipples extendabove the plate and as they are perforated, the heat and blast can passfreely through the diaphragm, while the liquid fuel cannot escapethrough said perforated nipples, and as the diaphragm is heated to aboutthe same temperature as the checker-work the liquid on the diaphragm isvaporized and the heat and gas thereby generated are utilized in theworking chamber.

R is the blast pipe or fine to the combustion-chamber, which extendsthrough or underneath the bed of the furnace, and this blast-pipedischarges into the checker-work below the horizontal diaphragm ordrip-plate.

The operation of my furnace may be briefly summarized, as follows: Thechecker-work is heated in any convenient way, and the heat and gasesfrom the working chamber pass through the passages cl 6 to heat thechambers D E, the coils, and pipes therein. The blasts having beenstarted in the pipes J R, the gases in the heatingchambers are drawninto the mixing flues or pipes by the jets of steam or air, and saidsteam or air and gases pass through the mixing-fines into the chamber N.The fuel fed to the checkerwork by the supply-pipe is vaporized andcommingles with the blast from the pipe R, and the two currents of gasesand air-the one from the chamber N and the other current from thecheckerworkare commingled as they pass over the bridge-wall into theworking chamber A, as

will be readily understood.

I am'aware that changes in the form and proportion of parts and detailsof construction may be made without departing from the spirit orsacrificing the advantages of my invention, and I therefore reserve theright to make such changes as fairly fall within the scope of myinvention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a furnace substantially as described, the combination, with aworking chamber, a comb ustion-chamber, a bridge-wall, andheating-chambers arranged to receive from the rear part of said workingchamber, of a chamber N, arranged above the combustion-chamber andhaving outlets to discharge its contents over the bridge-wall, and thelongitudinal flues adapted to convey heat, &c., from theheating-chambers to said elevated chamber N, as and for the purposedescribed.

2. In a furnace substantially as described, the combination, with aworking chamber, a combustion-chamber, and a bridge-wall, of atransverse elevated chamber N, arranged over the combustion-chamber andhaving the outlets n, arranged to discharge the contents over saidbridge-wall, the checker-Work situated in said combustion-chamber belowthe elevated chamber, a fuel-supply pipe 0, having outlets discharginginto said checker-work, and means for supplying heat to said elevatedchamber, whereby the currents from the checker-work and the elevatedchamber are combined at or over the bridge-wall, as and for the purposedescribed.

3. In a furnace substantially as herein shown and described, thecombination, with a working chamber, a combustion-chamber, abridge-wall, and the heating-chambers arranged to receive from the rearpart of said working chamber, of the transverse elevated chamber N,situated over the combustionchamber and having at its rear end theoutletports at, which discharge over the bridgewall, the mixing-finesarranged 1ongitudi nally of the furnace and connected to said heatingand elevated chambers, the checken, work in said combustion-chamberbelow the elevated chamber N, and the fuelsupply pipe 0, discharginginto the checker-work, as and for the purpose described.

4. In a furnace substantially as described, the combination, with aworking chamber, the bridge-wall, heating-chambers, and fines, of anarch forming a chamber in the upper front part of the furnace whichreceives from the flues, said arch having the rear part thereofperforated for the escape of the currents over the bridge-wall, thechecker-work, a supplypipe, and a blast-pipe, as and for the purposedescribed.

5. In a furnace substantially as described, the combination,withaworking chamber, the bridge-wall, heating-chambers, and fines, of thearch arranged to form the receiving-chamber N in the upper front part ofthe furnace, having the perforated inclined or curved rearwallmoverhangin g the bridge-wall, the checker-work, the supply-pipe,and the blast-pipe, as and for the purpose specified.

6. In a furnace, the combination, with a workingchamber,acombustion-chamber, and a bridge-wall, of the checker-work L,situated in said combustion-chamber, the supply-pipe 0, having a seriesof branches which discharge into said checker-work, and ablast-pipe R,discharging into said combustion-chamber below the checker-work therein,whereby the blast is commingled with the fuel as the currents passthrough the checker-work, as and for the purpose described.

7. In a furnace substantially as described, the combination, with aworking chamber and the bridge-wall thereto, of the checker-work, thesupply-pipe which discharges into said checker-work, a perforateddiaphragm or dripplate in the checker-work, and a blast-pipe arrangedbelowthe working chamberand having its discharge end below the diaphragmor drip-plate, as and for the purpose described.

8. In a furnace substantially as described, the combination, with aworking chamber and a bridge-wall, of the checker-work, a supplypipearranged to discharge fuel into said checken'work, a diaphragm ordrip-plate in the checker-work below the discharge-openings of thesupply-pipe and having the perforated raised nipples on its upper side,and a blast-pipe arranged below the Working chamber and having itsdischarge end below the diaphragm or drip-plate, as and for the purposedescribed.

9. In afurnace substantially as described, the combination, with aworking chamber, combustion-chamber, bridge-wall, and heating-chambers,of the checkerwork in said combustion-chamber, a fuel-supply pipe 0,located outside of the furnace and having branches which discharge intothe checkerwork, the heating-coils P, situated in the heating chambers,and the connecting pipes extending longitudinally of the furnace andconnecting the heating-coils and supply-pipe, as and for the purposedescribed.

I 10. In afurnace substantially as described, the combination,with aworking chamber, the heating-chambers, and longitudinal flues or pipes,of a divided blast-box in each heatingchamber having its compartmentsconnected by a circulating-pipe, a blast-pipe connected to one of saidcompartments, and a jet-pipe leading from the other compartment to thelongitudinal fines or pipes, as and for the purpose described.

11. In a furnace substantially as described, the combination,with aworking chamber and the heating-chambers, of a single receivingchamber Nat the front of the furnace, the longitudinal flues or pipes extendingfrom the heating-chambers to said chamber N, the divided blast-boxeseach having its compartments connected by circulating-pipes, theblast-pipes connected to the blast-boxes, and an individual jet-pipeleading from the blastbox to each longitudinal fine or pipe, as and forthe purpose described.

In testimony whereof Iaflix my signature in presence of two witnesses.

WILLIAM STUBBLEBINE.

Witnesses:

JACOB W. LUOKENBACH, HORTENSIA V. KRAUSE.

